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11 QUALITY ASSURANCE AND TESTING <br />11.1 The Engineer will perform tests on earth materials at the site to determine <br />if such materials are in compliance with the respective specified require- <br />ments. <br />11.2 The type and number of tests shall be performed by the Engineer at <br />locations and depth of his choosing. <br />11.3 Acceptance of earth materials will be made only after such materials have <br />been incorporated into the completed work. Rejection of such materials by <br />the Engineer can be made in the borrow areas, transportation vehicles, or <br />in-place in the completed work. The Contractor shall cooperate with the <br />Engineer to provide access to the work areas as needed for testing and to <br />insure that only acceptable materials will be incorporated into the <br />completed work. <br />11.4 Unacceptable work shall be reworked until satisfactory tests are obtained, <br />or shall be removed and replaced to meet the requirement of this specifica- <br />tion. <br />11.5 The following tests, either in the field or in the laboratory, may be <br />performed to identify materials, to determine the compaction <br />characteristics, to define the moisture content of earth material and to <br />determine the in-place density of the compacted fill. The Contractor shall <br />aid and cooperate with the Engineer in obtaining samples of the earth <br />materials far testing. <br />11.5.1 Unified classification of soil, ASTM D 2487. <br />11.5.2 Density of fill by in-place sand cone method, ASTM D 1556, or <br />nuclear density, ASTM D 2922. <br />11.5.3 Relative density, ASTM D 4253 and D 4254. <br />11.5.4 Grain size analysis of the soil, ASTM D 422. <br />11.5.5 Moisture content of the soil, ASTM D 2216 and D 3017. <br />11.5.6 Moisture-density relationship, standard Proctor density, ASTM <br />D 698. <br />11.5.7 The gradation of Type I Filter may be tested after placement in <br />accordance with ASTM D 422 at least once for every 500 <br />cubic yards of material placed. <br />SPEC. A -EARTHWORK <br />PAGE 20 <br />